Inner core of loudspeaker module, loudspeaker module and electronic equipment

Abstract

The embodiment of the invention provides an inner core of a loudspeaker module, the loudspeaker module and electronic equipment, and the inner core of the loudspeaker module comprises a vibration system which comprises a voice coil, a main vibrating diaphragm and an auxiliary vibrating diaphragm, and the main vibrating diaphragm and the auxiliary vibrating diaphragm are arranged at an interval in the vibration direction; the voice coil is located below the main vibrating diaphragm and is connected with the main vibrating diaphragm and the auxiliary vibrating diaphragm; the magnetic circuit system is located below the main vibrating diaphragm and comprises a magnet assembly and a magnetic conductive assembly. The magnet assembly comprises a central magnet and an annular magnet outside the central magnet, a magnetic gap is formed between the annular magnet and the central magnet, and the bottom of the voice coil extends into the magnetic gap; the magnetic conductive assembly comprises a magnetic conductive frame, and the magnetic conductive frame comprises an inner ring bottom plate and an outer ring support surrounding the outer side of the inner ring bottom plate. The inner ring bottom plate is attached to the top surface of the annular magnet and is matched with the top surface of the annular magnet in shape; the outer ring support is partially connected with the inner ring bottom plate, and an avoiding hole capable of avoiding the auxiliary vibrating diaphragm is defined between the outer ring support and the inner ring bottom plate; the main vibrating diaphragm is erected on the top of the outer ring support.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a core of a speaker module, a speaker module and an electronic device. Background Art

[0002] Speakers, as electronic devices that convert electrical energy into sound energy, are widely used in various electronic terminals such as mobile phones and tablet computers. With the improvement of consumption level, people's requirements for speaker modules are not only limited to video and audio playback, but also have higher requirements for the sound quality of the sound played by the speaker module.

[0003] However, the speaker module in the related art is prone to poor sound quality or even unusable after being subjected to external impact. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a speaker module core, a speaker module and an electronic device to solve the problem of poor sound quality after the speaker module is impacted. The specific technical solution is as follows:

[0005] An embodiment of the first aspect of the present application provides a core of a speaker module, including a vibration system, including a voice coil, and a main diaphragm and an auxiliary diaphragm spaced apart in the vibration direction; the voice coil is located below the main diaphragm and connected to the main diaphragm and the auxiliary diaphragm; a magnetic circuit system is located below the main diaphragm and includes a magnet assembly and a magnetic conductive assembly; the magnet assembly includes a central magnet and an annular magnet outside the central magnet, a magnetic gap is formed between the annular magnet and the central magnet, and the bottom of the voice coil extends into the magnetic gap; the magnetic conductive assembly includes a magnetic conductive frame, the magnetic conductive frame includes an inner ring bottom plate and an outer ring bracket surrounding the outer side of the inner ring bottom plate; the inner ring bottom plate is attached to the top surface of the annular magnet, and its shape matches the top surface of the annular magnet; the outer ring bracket is connected to a portion of the inner ring bottom plate, and an avoidance hole capable of avoiding the auxiliary diaphragm is defined between the outer ring bracket and the inner ring bottom plate; the main diaphragm is mounted on the top of the outer ring bracket.

[0006] In an embodiment of the present application, the magnetic conductive frame includes an inner ring bottom plate and an outer ring bracket, and the inner ring bottom plate and the outer ring bracket form a double ring structure, wherein the inner ring bottom plate is used for magnetic conduction, and the outer ring bracket acts as an external frame. The core of the speaker module of the related art adopts an independently set single-ring magnetic conductive plate, which is not connected to other components. When impacted, the single-ring magnetic conductive plate is prone to shaking, resulting in changes in the gap size between the central magnetic conductive plate, affecting the magnetic field, and causing the sound effect to deteriorate. Compared with the related art, the core of the speaker module provided by the present application integrates the single-ring magnetic conductive plate and the external frame into a magnetic conductive frame with a double ring structure, and the inner ring bottom plate is connected to the outer ring bracket. When subjected to external impact, the inner ring bottom plate and the outer ring bracket can withstand the impact force as a whole. In this way, the impact force on the inner ring bottom plate is reduced, which is beneficial to improving the shaking of the inner ring bottom plate and improving the impact resistance of the inner ring bottom plate. Therefore, after the speaker module is subjected to external impact, the inner ring bottom plate can remain relatively stable, reducing the impact on the magnetic field, so that the speaker module can still maintain good sound quality.

[0007] In some embodiments of the present application, the magnetic conductive component also includes a basin frame; the basin frame includes a bottom magnetic conductive plate and a vertical side plate connected to the bottom magnetic conductive plate, the magnet assembly is installed at the center position of the bottom magnetic conductive plate, and the bottom surfaces of the central magnet and the annular magnet are in contact with the bottom magnetic conductive plate; the magnetic conductive frame is mounted on the vertical side plates of the basin frame, so that the bottom surface of the inner ring bottom plate of the magnetic conductive frame is in contact with the top surface of the annular magnet.

[0008] Thus, the bottom magnetic plate can constrain the magnetic lines of force of the central magnet and the annular magnet, thereby increasing the magnetic flux intensity in the magnetic gap between the central magnet and the annular magnet, and increasing the driving strength of the vibration system. In addition, by mounting the magnetic frame on the vertical side plate of the basin frame, the bottom surface of the inner ring bottom plate of the magnetic frame can be made to fit the top surface of the annular magnet.

[0009] In some embodiments of the present application, the top of the vertical side plate of the basin frame is provided with a plurality of protrusions, and the bottom of the outer ring bracket of the magnetic conductive frame is provided with a flange wall, and the flange wall is connected to the protrusions. In this way, the connection between the basin frame and the magnetic conductive frame is convenient, and a gap is provided between the part of the vertical side plate without the protrusion and the bottom of the outer ring bracket, and the gap can be used to accommodate and fix a part of the structure of the vibration system, such as an auxiliary vibration membrane.

[0010] In some embodiments of the present application, the vibration system also includes a spherical top and a supporting frame, and the main diaphragm is connected to the auxiliary diaphragm through the spherical top and the supporting frame; the supporting frame is located between the spherical top and the auxiliary diaphragm; the outer edge of the auxiliary diaphragm is located between the outer ring bracket of the magnetic frame and the vertical side plate of the basin frame, and the inner edge of the auxiliary diaphragm is connected to the bottom end of the supporting frame, and there is a gap between the inner edge of the auxiliary diaphragm and the annular magnet; so that an avoidance space is formed between the avoidance hole of the magnetic frame, the vertical side plate of the basin frame and the annular magnet, so that the auxiliary diaphragm can be avoided.

[0011] In this way, the connection between the main diaphragm, the auxiliary diaphragm and the voice coil can be achieved. When the voice coil vibrates, it can drive the supporting frame to vibrate, thereby driving the main diaphragm, the dome and the auxiliary diaphragm to vibrate together.

[0012] In some embodiments of the present application, the supporting skeleton is an annular structure, including an inner peripheral plate, an outer peripheral plate, and a top plate connecting the inner peripheral plate and the outer peripheral plate, the top plate is located at one end of the inner peripheral plate and the outer peripheral plate close to the spherical top, and is connected to the spherical top; the bottom end of the inner peripheral plate is connected to the voice coil, the outer peripheral plate is located between the inner ring bottom plate and the outer ring bracket of the magnetic conductive frame, and has a gap with the annular magnet, and the bottom end of the outer peripheral plate is connected to the inner edge of the auxiliary diaphragm, so that there is a gap between the inner edge of the auxiliary diaphragm and the annular magnet.

[0013] In this way, not only can the connection between the supporting frame and the main diaphragm, the auxiliary diaphragm and the voice coil be achieved, but also interference between the auxiliary diaphragm and other components during vibration can be avoided.

[0014] In some embodiments of the present application, the vibration system also includes a flexible circuit board, which is located between the main diaphragm and the auxiliary diaphragm; the flexible circuit board includes a fixed part and a vibration part; the fixed part is used to be electrically connected to the voice coil; the outer edge of the vibration part is tightly fitted with the outer edge of the auxiliary diaphragm, and the inner edge of the vibration part is tightly fitted with the inner edge of the auxiliary diaphragm.

[0015] In the embodiment of the present application, the voice coil is powered by a flexible circuit board, wherein the flexible circuit board includes a fixed portion and a vibration portion, the fixed portion can be electrically connected to the voice coil and the vibration portion respectively, and the vibration portion can be arranged by closely fitting the outer edge of the vibration portion to the outer edge of the auxiliary diaphragm and closely fitting the inner edge of the vibration portion to the inner edge of the auxiliary diaphragm.

[0016] In some embodiments of the present application, the outer edge of the vibration part of the flexible circuit board and the outer edge of the auxiliary vibration membrane are stacked between the outer ring bracket of the magnetic conductive frame and the vertical side plate of the basin frame; the inner edge of the vibration part of the flexible circuit board is arranged between the bottom end of the outer peripheral plate of the supporting frame and the inner edge of the auxiliary vibration membrane; so that the avoidance space can avoid the auxiliary vibration membrane and the vibration part of the flexible circuit board.

[0017] In this way, the layout of the flexible circuit board is facilitated, and the vibration part can vibrate together with the voice coil, thereby assisting the stability of the vibration system and facilitating maintaining a good sound quality.

[0018] In some embodiments of the present application, a through hole is provided between the bottom magnetic conductive plate of the basin frame and the vertical side plate; the position of the through hole corresponds to the position of the avoidance hole of the magnetic conductive frame; a damping net is also provided at the bottom of the basin frame, and the damping net covers the through hole.

[0019] In the embodiment of the present application, by providing a through hole in the bottom magnetic conductive plate, the shape of the bottom magnetic conductive plate can be adapted to the central magnet and the annular magnet, which is convenient for the installation of the magnet assembly and helps to reduce the mass of the basin frame. By providing a damping net at the through hole, water and dust that may enter from the outside and affect the core can be blocked.

[0020] In some embodiments of the present application, the annular magnet includes side magnets located on both sides of the central magnet and a connecting magnet connecting the two side magnets, and the side magnets and the connecting magnets together form an annular structure. This is not only conducive to convenient processing and cost reduction, but also there is no gap between the annular magnets, which can avoid the problem of airflow noise caused by a high airflow velocity in the gap.

[0021] In some embodiments of the present application, the inner ring bottom plate of the magnetic conductive frame includes: two first connecting parts connected to the bottom of the outer ring bracket and arranged opposite to each other; and two second connecting parts respectively connected to the two first connecting parts to form an inner ring; the two second connecting parts respectively define two avoidance holes with the two first connecting parts and the frame of the adjacent outer ring bracket; the number of the auxiliary vibration membranes is two, and the positions of the two auxiliary vibration membranes correspond to the two avoidance holes respectively. In this way, not only can the shape of the inner ring bottom plate be matched with the annular magnet, but also avoidance holes can be formed at the same time to avoid the auxiliary vibration membrane.

[0022] In some embodiments of the present application, the magnetic conductive frame is integrally formed, or the magnetic conductive frame is a split structure. By integrally forming the magnetic conductive frame, the production of the inner ring bottom plate is convenient and has high precision. By splitting and connecting the magnetic conductive frame, the cost of the magnetic conductive frame can be reduced.

[0023] In some embodiments of the present application, the two first connection parts of the magnetic conductive frame are integrally formed with the outer ring bracket; the two second connection parts are separate short-side magnetic conductive rings; the two ends of the short-side magnetic conductive ring are respectively connected to the two first connection parts, and the two short-side magnetic conductive rings and the two first connection parts constitute the inner ring; the first connection part is provided with a first cutout, and the short-side magnetic conductive ring is provided with a second cutout, and the shapes of the first cutout and the second cutout are consistent and correspondingly connected. In this way, the first connection part and the second connection part can be matched, so that the connection between the first connection part and the second connection part meets the design requirements.

[0024] In some embodiments of the present application, the magnetic conductive component further includes a central magnetic conductive plate, which is attached to the top surface of the central magnet and has a shape that matches the top surface of the central magnet.

[0025] Therefore, the central magnetic conductive plate and the inner ring bottom plate of the magnetic conductive frame can effectively constrain the magnetic lines of force of the central magnet and the annular magnet, increase the magnetic flow intensity in the magnetic gap, and improve the driving strength of the vibration system.

[0026] The embodiment of the second aspect of the present application provides a speaker module, comprising a shell and a core of the speaker module described in any embodiment of the first aspect; the shell comprises a front cover, the front cover is fixed to the side of the main diaphragm away from the magnetic circuit system, and the front cover is provided with a sound outlet channel. Since it has the core of the speaker module in any embodiment of the first aspect, it also has the beneficial effects of any embodiment of the first aspect, which will not be repeated here.

[0027] The embodiment of the third aspect of the present application provides an electronic device, the electronic device comprising a housing and the speaker module described in the embodiment of the second aspect; the housing is provided with a sound outlet hole; the speaker module is arranged in the housing, and the sound outlet hole is connected to the sound outlet channel. Since it has the speaker module in any embodiment of the second aspect, and the speaker module has the core of the speaker module in any embodiment of the first aspect, it also has the beneficial effects of any embodiment of the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application;

[0030] Figure 2 for Figure 1 An exploded view of an embodiment of the electronic device shown;

[0031] Figure 3 for Figure 1 An exploded view of another embodiment of the electronic device;

[0032] Figure 4 A schematic diagram of the structure of a speaker module provided in an embodiment of the present application;

[0033] Figure 5 for Figure 4 An exploded view of the structure of the speaker module shown;

[0034] Figure 6 for Figure 4 A schematic cross-sectional view of the speaker module shown at AA;

[0035] Figure 7a A schematic diagram of the structure of the core of the speaker module provided in the embodiment of the present application Figure 1 ;

[0036] Figure 7b A schematic diagram of the structure of the core of the speaker module provided in the embodiment of the present application Figure 2 ;

[0037] Figure 8 for Figure 7a An exploded view of the structure of the core of the speaker module shown;

[0038] Fig. 9 for Figure 7a A schematic cross-sectional view of the core of the speaker module shown at position BB;

[0039] Fig.10 for Figure 7a A three-dimensional cross-sectional view of the core of the loudspeaker module shown at BB;

[0040] Fig.11 for Figure 8 A schematic diagram of the structure of the middle magnet assembly;

[0041] Fig.12a for Figure 8 Schematic diagram of the structure of the magnetic conductive frame;

[0042] Figure 12b for Fig.12a The structural exploded view of the magnetic conductive frame shown;

[0043] Fig.12c for Fig.12a A schematic diagram of a connection between a first connection portion and a second connection portion of the magnetic conductive frame;

[0044] Fig.12d is a schematic diagram of a connection between a first connection portion and a second connection portion of a magnetic conductive frame in another embodiment;

[0045] Fig.13 for Figure 8 Schematic diagram of the structure of the middle basin frame;

[0046] Fig.14a for Figure 8 Schematic diagram of the assembly of the medium magnetic frame and basin frame Figure 1 ;

[0047] Fig.14b for Figure 8 Schematic diagram of the assembly of the medium magnetic frame and basin frame Figure 2

[0048] Fig.15 for Figure 8 Schematic diagram of the structure of the middle support frame;

[0049] Fig.16 for Figure 8 Schematic diagram of the connection between the flexible circuit board and the voice coil;

[0050] Fig.17 for Figure 8 Schematic diagram of the connection between the flexible circuit board, the support frame and the voice coil;

[0051] Description of reference numerals:

[0052] Electronic device 1; screen 10; light-transmitting cover plate 11; display screen 12; back shell 20; back cover 21; frame 22; top frame 221; bottom frame 222; sound outlet 223; middle plate 23; main circuit board 30; auxiliary circuit board 40; battery 50; speaker module 60; shell 600; front cover 610; sound outlet channel 611; support ring 620; acoustic mesh 630; front cavity 640; core 70; vibration system 700; voice coil 710; main diaphragm 720, first folding ring part 721; first positioning hole 722; ball top 730; second positioning hole 731; auxiliary diaphragm 740; second folding ring part 741; support frame 750; top plate 751; positioning protrusion 7511; inner peripheral plate 752; wire hole 7521 ; peripheral plate 753; flexible circuit board 760; fixing part 761; vibrating part 762; wire 763; magnetic circuit system 800; magnet assembly 810; central magnet 811; annular magnet 812; side magnet 8121; connecting magnet 8122; magnetic gap 813; magnetic conductive assembly 820; magnetic conductive frame 830; inner ring bottom plate 831; first connecting part 8311; first incision 8312; second connecting part 8313; second incision 8314; outer ring bracket 832; flange wall 8321; avoidance hole 833; basin frame 840; bottom magnetic conductive plate 841; positioning groove 8411; through hole 8412; vertical side plate 842; protrusion 8421; avoidance space 843; central magnetic conductive plate 850; damping net 860. DETAILED DESCRIPTION

[0053] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0054] In order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second" and the like are used to distinguish the same items or similar items with substantially the same functions and effects. For example, the first connecting portion and the second connecting portion are used to distinguish different connecting portions, and the order thereof is not limited. Those skilled in the art can understand that the words "first", "second" and the like do not limit the quantity and position, and the words "first", "second" and the like do not necessarily limit the difference.

[0055] It should be noted that, in this application, words such as "exemplarily" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplarily" or "for example" in this application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplarily" or "for example" is intended to present related concepts in a specific way.

[0056] An embodiment of the present application provides an electronic device 1, which has a sound playing function.

[0057] Specifically, the electronic device 1 includes but is not limited to a mobile phone, a tablet computer, a personal computer, a laptop computer, a vehicle-mounted device, a wearable device, a walkman, a radio, a stereo, etc. Among them, the wearable device includes but is not limited to a smart bracelet, a smart watch, a smart head-mounted display, smart glasses, etc. The following description is based on the electronic device 1 being a mobile phone.

[0058] See also Figure 1 and Figure 2 , Figure 1 A schematic diagram of the structure of an electronic device 1 provided in an embodiment of the present application. Figure 2 yes Figure 1 An exploded view of the structure of an embodiment of the electronic device 1 is shown.

[0059] like Figure 1 and Figure 2 As shown, the electronic device 1 may include a screen 10 , a back shell 20 , a main circuit board 30 , a sub-circuit board 40 , a battery 50 and a speaker module 60 .

[0060] Understandably, Figure 1 and Figure 2 The following figures and the related drawings only schematically show some components of the electronic device 1, and the actual shapes, sizes, positions and structures of these components are not subject to Figure 1 and Figure 2 and the accompanying drawings below.

[0061] In the electronic device 1, the screen 10 is used to display images, videos, etc. The screen 10 may include a transparent cover plate 11 and a display screen 12, and the transparent cover plate 11 and the display screen 12 are stacked and fixedly connected by gluing or the like. The transparent cover plate 11 is mainly used to protect the display screen 12 and prevent dust. The display screen 12 may be a flexible display screen or a rigid display screen. The display screen 12 may be an organic light emitting diode display screen, an active matrix organic light emitting diode display screen or an active matrix organic light emitting diode display screen, a mini light emitting diode display screen, etc.

[0062] The back shell 20 forms the outer shell of the electronic device 1. The back shell 20 is used to protect the internal electronic components of the electronic device 1. The back shell 20 includes a back cover 21 and a frame 22. The back cover 21 is located on the side of the display screen 12 away from the light-transmitting cover plate 11, and is stacked with the light-transmitting cover plate 11 and the display screen 12. The frame 22 is located between the back cover 21 and the light-transmitting cover plate 11, and the light-transmitting cover plate 11, the back cover 21 and the frame 22 are buckled together to form a closed cavity.

[0063] The electronic device 1 may further include a middle plate 23, which is fixed around the inner surface of the frame 22 and is located in a closed cavity. The main circuit board 30, the auxiliary circuit board 40, the battery 50, and the speaker module 60 may be fixed to the middle plate 23 by means of threaded connection, clamping, welding, etc.

[0064] like Figure 2 As shown, the battery 50 can be fixed in the middle of the middle plate 23, and the battery 50 is used to supply power to various electronic devices in the electronic device 1, such as the main circuit board 30, the auxiliary circuit board 40 and the speaker module 60.

[0065] The main circuit board 30 is located on a side of the battery 50 close to the top frame 221 . The main circuit board 30 is used to integrate a control chip. In some embodiments, the main circuit board 30 may be electrically connected to the display screen 12 .

[0066] The auxiliary circuit board 40 and the speaker module 60 are located on one side of the battery 50 close to the bottom frame 222. The auxiliary circuit board 40 can be used to integrate electronic components such as antenna RF front end and universal serial bus devices. The main circuit board 30 and the auxiliary circuit board 40 can be electrically connected through a flexible circuit board or a wire.

[0067] The speaker module 60 is used to restore audio electrical signals such as music and voice into sound, and can support the function of audio external speaker. The speaker module 60 can be electrically connected to the auxiliary circuit board 40, and the audio electrical signal sent by the main circuit board 30 is transmitted to the speaker module 60 via the auxiliary circuit board 40, and further converted into a sound signal output by the speaker module 60.

[0068] The speaker module 60 has a sound outlet channel, and the bottom frame 222 of the electronic device 1 has a sound outlet hole 223, which is connected to the sound outlet channel of the speaker module 60. Therefore, the sound signal output from the sound outlet channel is output to the outside of the electronic device 1 through the sound outlet hole 223 at the bottom of the electronic device 1.

[0069] See also Figure 3 , Figure 3 yes Figure 1 The structure of another embodiment of the electronic device 1 is shown in an exploded view.

[0070] and Figure 2 The embodiment shown is different in that Figure 3 In the illustrated embodiment, the speaker module 60 is located on a side of the battery 50 close to the top frame 221, the main circuit board 30 is located on a side of the battery 50 close to the bottom frame 222, the electronic device 1 may not include the auxiliary circuit board 40, the speaker module 60 is directly electrically connected to the main circuit board 30, the sound outlet 223 is set on the top frame 221, and the sound signal of the speaker module 60 is output via the top of the electronic device 1.

[0071] The present application embodiment provides a speaker module 60, which is applied to the above electronic device 1. The structure of the speaker module 60 is shown in FIG. Figures 4 to 6 ,in Figure 4 Schematic diagram of the structure of the speaker module 60 of the embodiment of the present application. Figure 5 for Figure 4 An exploded view of the structure of the speaker module 60 is shown; Figure 6 for Figure 4 The speaker module 60 is shown as a cross-sectional view at AA.

[0072] like Figures 4 to 6 As shown, the speaker module 60 may include a housing 600 and a core 70. The housing 600 may include a front cover 610 and a support ring 620, wherein the support ring 620 is fixed to the top of the core 70, the front cover 610 is fixed to the side of the support ring 620 facing away from the core 70, and the sound outlet channel 611 is provided on the front cover 610.

[0073] A front cavity 640 can be defined between the front cover 610 and the core 70. When the vibration system of the core 70 vibrates, it will drive the gas in the front cavity 640 to vibrate. The gas vibration forms an airflow and is discharged through the sound outlet channel 611 of the front cover 610, so that the speaker module 60 outputs a sound signal.

[0074] Optionally, an acoustic mesh 630 is provided on the side of the front cover 610 facing away from the core 70, and the acoustic mesh 630 is used for acoustic filtering to adjust and improve the sound quality. The acoustic mesh 630 can also block water and dust that may enter from the outside and affect the core 70.

[0075] The embodiment of the present application also provides a core 70 of a speaker module 60, which is applied to the above-mentioned speaker module 60. Figures 7a to 10 ,in Figure 7a for Figure 4 The structure of the core 70 of the speaker module 60 is shown as follows Figure 1 ; Figure 7b for Figure 4 The structure of the core 70 of the speaker module 60 is shown as follows Figure 2 ; Figure 8 for Figure 7a An exploded view of the structure of the core 70 is shown; Fig. 9 for Figure 7a The cross-sectional view of the core 70 at position BB is shown; Fig.10 for Figure 7a The core 70 is shown in a perspective cross-sectional view at BB.

[0076] like Figures 7a to 10 As shown, the core 70 includes a vibration system 700 and a magnetic circuit system 800 .

[0077] Among them, Figure 8 As shown, the vibration system 700 includes a voice coil 710 and a main diaphragm 720 and an auxiliary diaphragm 740 spaced apart in the vibration direction. Fig. 9 and Fig.10 As shown, the voice coil 710 is located below the main diaphragm 720 and is connected to the main diaphragm 720 and the auxiliary diaphragm 740 .

[0078] like Figure 7a As shown, the magnetic circuit system 800 is located below the main diaphragm 720, and the magnetic circuit system 800 includes a magnet assembly 810 and a magnetic conductive assembly 820. Figure 8 As shown, the magnet assembly 810 includes a central magnet 811 and an annular magnet 812 outside the central magnet 811, and a magnetic gap 813 is formed between the annular magnet 812 and the central magnet 811. Fig. 9 and Fig.10 As shown, the bottom of the voice coil 710 extends into the magnetic gap 813.

[0079] like Figure 8 As shown, the magnetic conductive assembly 820 includes a magnetic conductive frame 830, and the magnetic conductive frame 830 includes an inner ring bottom plate 831 and an outer ring bracket 832 surrounding the outer side of the inner ring bottom plate 831. Fig. 9 and Fig.10 As shown, the inner ring bottom plate 831 is attached to the top surface of the annular magnet 812, and its shape matches the top surface of the annular magnet 812. Figure 8 As shown, the outer ring bracket 832 is partially connected to the inner ring bottom plate 831 , and an avoidance hole 833 capable of avoiding the auxiliary vibration membrane 740 is defined between the outer ring bracket 832 and the inner ring bottom plate 831 .

[0080] The main diaphragm 720 is mounted on the top of the outer ring bracket 832 .

[0081] In the embodiment of the present application, the magnetic conductive frame 830 includes an inner ring bottom plate 831 and an outer ring bracket 832, and the inner ring bottom plate 831 and the outer ring bracket 832 form a double ring structure, wherein the inner ring bottom plate 831 is used for magnetic conduction, and the outer ring bracket 832 acts as an external frame. The core of the speaker module of the related art adopts an independently set single-ring magnetic conductive plate, which is not connected to other components. When impacted, the single-ring magnetic conductive plate is prone to shaking, resulting in a change in the gap size between the central magnetic conductive plate, affecting the magnetic field, and causing the sound effect to deteriorate. Compared with the related art, the core 70 of the speaker module 60 provided in the present application integrates the single-ring magnetic conductive plate and the external frame into a magnetic conductive frame 830 with a double-ring structure, and the inner ring bottom plate 831 is connected to the outer ring bracket 832. When subjected to external impact, the inner ring bottom plate 831 and the outer ring bracket 832 can withstand the impact force as a whole, so that the impact force borne by the inner ring bottom plate 831 is reduced, which is beneficial to improving the shaking of the inner ring bottom plate 831 and improving the impact resistance of the inner ring bottom plate 831. Therefore, after suffering an external impact, the inner ring bottom plate 831 can remain relatively stable, reducing the impact on the magnetic field, so that the speaker module can still maintain good sound quality.

[0082] It will be understood that the term “top” used herein to describe the various components in the core 70 refers to the side of the component being described that is close to the main diaphragm 720, “bottom” refers to the side of the component being described that is away from the main diaphragm 720, “inside” refers to the side of the component being described that is close to the central axis of the core 70, and “outside” refers to the side of the component being described that is away from the central axis of the core 70. It does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as a limitation on the present application.

[0083] In the embodiment of the present application, the central magnet 811 can be a magnet or a magnetic steel. Similarly, the annular magnet 812 can also be a magnet or a magnetic steel. The magnetization direction of the central magnet 811 (the direction from the south pole to the north pole, that is, the direction from the S pole to the N pole) is opposite to the magnetization direction of the annular magnet 812, so that a magnetic circuit can be formed between the central magnet 811 and the side magnet 8121. When the voice coil 710 is energized, the voice coil 710 vibrates under the action of the magnetic field in the magnetic gap 813, and drives the main diaphragm 720, the auxiliary diaphragm 740 and other components of the vibration system 700 to vibrate together.

[0084] In a specific embodiment, see Fig.11 , Fig.11 for Figure 8 Schematic diagram of the structure of the middle magnet assembly 810.

[0085] like Fig.11As shown, the annular magnet 812 includes side magnets 8121 located on both sides of the central magnet 811 and a connecting magnet 8122 connecting the two side magnets 8121, and the side magnets 8121 and the connecting magnets 8122 together form an annular structure. Therefore, not only is it convenient to process and reduce costs, but there is no structural gap between the annular magnets 812, so that the airflow velocity in the structural gap is large, which can avoid the problem of airflow sound.

[0086] In other embodiments of the present application, the annular magnet 812 may also be a complete annular magnet structure, which is not limited in the present application.

[0087] like Fig. 9 and Fig.10 As shown, in the core 70, the auxiliary diaphragm 740 is located below the main diaphragm 720. In order to avoid the auxiliary diaphragm 740, an avoidance hole 833 is defined between the outer ring bracket 832 and the inner ring bottom plate 831 of the magnetic conductive frame 830. Fig.12a , Fig.12a Shows Figure 8 Schematic diagram of the structure of the middle magnetic conductive frame 830.

[0088] like Fig.12a As shown, the inner ring bottom plate 831 of the magnetic conductive frame 830 includes a first connecting portion 8311 and a second connecting portion 8313. Two first connecting portions 8311 are provided, and the two first connecting portions 8311 are respectively connected to the bottom of the outer ring bracket 832 and are arranged opposite to each other. Two second connecting portions 8313 are provided, and the two second connecting portions 8313 are respectively connected to the two first connecting portions 8311 to form the inner ring bottom plate 831. The two second connecting portions 8313 respectively define two avoidance holes 833 with the two first connecting portions 8311 and the frame of the adjacent outer ring bracket 832. As shown Fig.10 As shown, there are two auxiliary diaphragms 740, and the positions of the two auxiliary diaphragms 740 correspond to the two avoidance holes 833. In this way, the connection between the inner ring bottom plate 831 and the outer ring bracket 832 can be achieved, and the interference between the auxiliary diaphragm 740 and the magnetic frame 830 can be avoided when the auxiliary diaphragm 740 vibrates, thereby ensuring the sound quality.

[0089] For further information, see Figure 12b , Figure 12b Shows Fig.12a Structural exploded view of the middle magnetic conductive frame 830.

[0090] like Figure 12b As shown, in the embodiment of the present application, the magnetic conductive frame 830 is a split structure, specifically, the two first connecting parts 8311 of the magnetic conductive frame 830 and the outer ring bracket 832 are integrally formed, and the two second connecting parts 8313 are separate short-side magnetic conductive rings.

[0091] The two ends of the short side magnetic conductive ring are respectively connected to the two first connecting parts 8311, and the two short side magnetic conductive rings and the two first connecting parts 8311 constitute an inner ring. The first connecting part 8311 is provided with a first cutout 8312, and the short side magnetic conductive ring is provided with a second cutout 8314. The first cutout 8312 and the second cutout 8314 match in shape and are correspondingly connected. Thus, the processing and manufacturing of the magnetic conductive frame 830 is convenient and the cost is low.

[0092] like Figure 12b As shown, the first cutout 8312 is formed by cutting off a portion of the bottom of the first connection portion 8311 near the corner of the second connection portion 8313, and the second cutout 8314 is formed by cutting off a portion of the top side of the end of the second connection portion 8313. In order to achieve a good fit between the first connection portion 8311 and the second connection portion 8313, the shapes of the first cutout 8312 and the second cutout 8314 are consistent. The shapes of the first cutout 8312 and the second cutout 8314 can be as follows: Fig.12c As shown in the figure, the bevel shape is formed after the opposite corner is beveled once, which can also be Fig.12d As shown, the mutually perpendicular right-angled edges are formed by cutting the corners twice in two mutually perpendicular directions. The present application does not limit the shapes of the first incision 8312 and the second incision 8314, as long as the first incision 8312 and the second incision 8314 can be connected in coordination.

[0093] In a specific embodiment, the first incision 8312 and the second incision 8314 can be laser welded or glued to improve the structural strength.

[0094] In other embodiments of the present application, the magnetic conductive frame 830 can be integrally formed, that is, the outer ring bracket 832 of the magnetic conductive frame 830 and the first connecting portion 8311 and the second connecting portion 8313 of the inner ring bottom plate 831 are all integrally formed. The integrally formed magnetic conductive frame 830 can further improve the impact resistance of the inner ring bottom plate 831, so that in the event of an external impact, the inner ring bottom plate 831 can remain relatively stable, which is conducive to the speaker module 60 maintaining good sound quality. Of course, the magnetic conductive frame 830 does not have to be integrally formed, and the present application does not limit this.

[0095] In the embodiment of the present application, the outer ring bracket 832 of the magnetic conductive frame 830 plays the role of an external frame, and the inner ring bottom plate 831 of the magnetic conductive frame 830 is arranged to fit the top surface of the annular magnet 812 and has a magnetic conductive effect.

[0096] In addition, in the embodiment of the present application, the outer ring bracket 832 and the inner ring bottom plate 831 of the magnetic frame 830 are both made of metal. Therefore, the strength of the outer ring bracket 832 and the inner ring bottom plate 831 is relatively high, which is beneficial to further improve the impact resistance of the magnetic frame 830.

[0097] like Figure 8 As shown, the magnetic conductive assembly 820 also includes a central magnetic conductive plate 850. Fig. 9 and Fig.10 As shown, the central magnetic conductive plate 850 is attached to the top surface of the central magnet 811, and its shape matches the top surface of the central magnet 811. There is a gap between the central magnetic conductive plate 850 and the inner edge of the inner ring bottom plate 831 of the magnetic conductive frame 830, and the gap is interconnected with the gap between the central magnet 811 and the annular magnet 812 to form a magnetic gap 813. In this way, the magnetic lines of force of the central magnet 811 and the annular magnet 812 can be constrained by the central magnetic conductive plate 850 and the inner ring bottom plate 831 of the magnetic conductive frame 830, thereby increasing the magnetic flow intensity in the magnetic gap 813 and improving the driving strength of the vibration system 700.

[0098] Furthermore, if Figure 8 As shown, the magnetic conductive component 820 also includes a basin frame 840. Fig.13 , Fig.13 Shows Figure 8 A schematic structural diagram of the middle basin frame 840.

[0099] like Fig.13 As shown, the basin frame 840 includes a bottom magnetic conductive plate 841 and a vertical side plate 842 connected to the bottom magnetic conductive plate 841. Fig. 9 and Fig.10 As shown, the central magnet 811 and the annular magnet 812 are installed at the center of the bottom magnetic conductive plate 841, and the bottom surfaces of the central magnet 811 and the annular magnet 812 are in contact with the bottom magnetic conductive plate 841. Thus, the bottom magnetic conductive plate 841 can constrain the magnetic lines of force of the central magnet 811 and the annular magnet 812, thereby further improving the magnetic flow intensity in the magnetic gap 813 between the central magnet 811 and the annular magnet 812, and improving the driving strength of the vibration system 700.

[0100] like Fig. 9 and Fig.10 As shown, a positioning groove 8411 is provided on the bottom magnetic conductive plate 841, and the position of the positioning groove 8411 corresponds to the magnetic gap 813. Therefore, during the installation process of the basin frame 840 and the magnet assembly 810, it is convenient to determine the positions of the central magnet 811 and the annular magnet 812, which is conducive to reducing the difficulty of assembly and improving the efficiency of assembly.

[0101] See also Fig.14a and Fig.14b ,in Fig.14a for Figure 8 Schematic diagram of the assembly of the central magnetic frame 830 and the basin frame 840 Figure 1 ; Fig.14b for Figure 8 Schematic diagram of the assembly of the central magnetic frame 830 and the basin frame 840 Figure 2 .

[0102] like Fig.14a and Fig.14b As shown, the magnetic conductive frame 830 is mounted on the vertical side plate 842 of the basin frame 840 , thereby allowing the bottom surface of the inner ring bottom plate 831 of the magnetic conductive frame 830 to fit the top surface of the annular magnet 812 .

[0103] like Figure 13 to Figure 14b As shown, a through hole 8412 is further provided between the bottom magnetic conductive plate 841 of the basin frame 840 and the vertical side plate 842, and the position of the through hole 8412 corresponds to the position of the avoidance hole 833 of the magnetic conductive frame 830. Thus, the shape of the bottom magnetic conductive plate 841 can be adapted to the central magnet 811 and the annular magnet 812, which further facilitates the installation of the magnet assembly 810 and helps to reduce the mass of the basin frame 840.

[0104] like Figure 7b As shown, a damping net 860 is also provided at the bottom of the basin frame 840, and the damping net 860 covers the through hole 8412. Thus, water and dust that may enter from the outside and affect the inner core 70 can be blocked.

[0105] In the embodiment of the present application, the vibration system 700 includes a main diaphragm 720 and an auxiliary diaphragm 740 which are spaced apart in the vibration direction.

[0106] Specifically, Figure 7a As shown, in the embodiment of the present application, the main diaphragm 720 is an annular structure, and the vibration system 700 further includes a dome 730, which is located in the annular region of the main diaphragm 720, the inner edge of the main diaphragm 720 is connected to the dome 730, and the outer edge of the main diaphragm 720 can be bonded to the top of the outer ring bracket 832. Thus, the dome 730 in the core 70, the main diaphragm 720, and the front cover 610 of the speaker module 60 can jointly define the above-mentioned front cavity 640, and the dome 730 can not only be used to support the main diaphragm 720, but also can adjust the high-frequency electroacoustic performance.

[0107] like Fig. 9 and Fig.10 As shown, the portion of the main diaphragm 720 located between the inner edge and the outer edge protrudes toward the basin frame 840 to form a first folded ring portion 721. When the voice coil 710 vibrates, the first folded ring portion 721 can be deformed, so that the main diaphragm 720 and the dome 730 can vibrate up and down, thereby driving the gas in the above-mentioned front cavity 640 to vibrate.

[0108] In the embodiment of the present application, the voice coil 710 is also connected to the auxiliary diaphragm 740. When the voice coil 710 vibrates, the auxiliary diaphragm 740 also deforms, thereby assisting the stability of the vibration system 700 and helping to maintain a good sound quality.

[0109] In order to realize the connection between the main diaphragm 720, the auxiliary diaphragm 740 and the voice coil 710, as shown in FIG. Figures 8 to 10 As shown, the vibration system 700 further includes a support frame 750, which is located between the dome 730 and the auxiliary diaphragm 740, and the main diaphragm 720 is connected to the auxiliary diaphragm 740 through the dome 730 and the support frame 750. Specifically, the top of the support frame 750 is connected to the main diaphragm 720 through the dome 730, and the bottom of the support frame 750 is respectively connected to the inner edges of the voice coil 710 and the auxiliary diaphragm 740, and there is a gap between the inner edge of the auxiliary diaphragm 740 and the annular magnet 812, so that when the voice coil 710 vibrates, the support frame 750 can be driven to vibrate, thereby driving the main diaphragm 720, the dome 730 and the auxiliary diaphragm 740 to vibrate.

[0110] Specifically, see Fig.15 , Fig.15 Shows Figure 8 A schematic diagram of the structure of the middle support frame 750.

[0111] like Fig.15 As shown, the support frame 750 is an annular structure, and the support frame 750 includes an inner peripheral plate 752, an outer peripheral plate 753, and a top plate 751 connecting the inner peripheral plate 752 and the outer peripheral plate 753.

[0112] The top plate 751 is located at one end of the inner peripheral plate 752 and the outer peripheral plate 753 close to the spherical top 730 , and the top plate 751 may be connected to the spherical top 730 .

[0113] In addition, a positioning protrusion 7511 is provided on the top plate 751. Figure 8 The main diaphragm 720 is provided with a first positioning hole 722, and the dome 730 is provided with a second positioning hole 731. The positions of the first positioning hole 722, the second positioning hole 731 and the positioning protrusion 7511 correspond to each other, so that the main diaphragm 720, the dome 730 and the supporting frame 750 can be conveniently positioned during installation.

[0114] like Fig.15 As shown, the inner peripheral plate 752 is a complete annular structure. Fig. 9 and Fig.10 As shown, the inner circumferential plate 752 is arranged corresponding to the top of the magnetic gap 813, and the bottom end of the inner circumferential plate 752 is bent in the horizontal direction and connected to the voice coil 710, thereby realizing the connection between the support frame 750 and the voice coil 710, and the contact area between the inner circumferential plate 752 and the voice coil 710 is large, and the connection is stable.

[0115] like Fig. 9 and Fig.10As shown, the peripheral plate 753 is located between the inner ring bottom plate 831 and the outer ring bracket 832 of the magnetic conductive frame 830, and there is a gap between the peripheral plate 753 and the annular magnet 812. That is, the position of the peripheral plate 753 corresponds to the avoidance hole 833 of the magnetic conductive frame 830. The inner edge of the auxiliary vibration membrane 740 is connected to the bottom end of the peripheral plate 753, thereby realizing the connection between the support frame 750 and the auxiliary vibration membrane 740, and making a gap between the inner edge of the auxiliary vibration membrane 740 and the annular magnet 812.

[0116] Furthermore, the outer edge of the auxiliary diaphragm 740 is fixed between the outer ring bracket 832 of the magnetic frame 830 and the vertical side plate 842 of the basin frame 840. Therefore, when the voice coil 710 vibrates, the supporting frame 750 will drive the inner edge of the auxiliary diaphragm 740 to vibrate, while the outer edge of the auxiliary diaphragm 740 remains fixed, so that the second folding ring portion 741 located between the inner edge and the outer edge of the auxiliary diaphragm 740 can be deformed, which is beneficial to the stability of the auxiliary vibration system 700 and to maintaining a good sound quality.

[0117] In the embodiment of the present application, an avoidance space 843 is formed between the avoidance hole 833 of the magnetic frame 830, the vertical side plate 842 of the basin frame 840 and the annular magnet 812. The avoidance space 843 can avoid the auxiliary vibration membrane 740, so that the second folding ring part 741 will not interfere with other components when it is deformed.

[0118] like Figures 8 to 10 As shown, in the embodiment of the present application, the vibration system 700 further includes a flexible circuit board 760, which is located between the main diaphragm 720 and the auxiliary diaphragm 740. One end of the flexible circuit board 760 is connected to the voice coil 710, and the other end of the flexible circuit board 760 can extend outside the core 70 and be connected to the internal circuit of the electronic device 1, such as the main circuit board 30 or the auxiliary circuit board 40, so as to transmit the audio electrical signal to the voice coil 710. After the voice coil 710 is energized, an induced magnetic field is generated, and after being affected by the magnetic force of the magnetic circuit system 800, it is displaced and drives the main diaphragm 720, the auxiliary diaphragm 740 and the supporting skeleton 750 to vibrate together.

[0119] See also Fig.16 and Fig.17 , Fig.16 for Figure 8 The connection diagram of the flexible circuit board 760 and the voice coil 710 is shown in FIG. Fig.17 for Figure 8 Schematic diagram of the connection between the flexible circuit board 760, the support frame 750 and the voice coil 710.

[0120] Specifically, Fig.16 and Fig.17As shown, the flexible circuit board 760 includes a fixing portion 761 and a vibration portion 762. The fixing portion 761 can be fixed to the top plate 751 of the support frame 750, and is electrically connected to the voice coil 710 and the vibration portion 762 through a wire 763. The inner circumferential plate 752 of the support frame 750 is also provided with a wire hole 7521, and the wire hole 7521 is used for the wire 763 to pass through.

[0121] like Fig. 9 and Fig.10 As shown, the outer edge of the vibration part 762 is closely fitted with the outer edge of the auxiliary diaphragm 740, and is stacked between the outer ring bracket 832 of the magnetic conductive frame 830 and the vertical side plate 842 of the basin frame 840, thereby fixing the outer edge of the vibration part 762. The inner edge of the vibration part 762 is closely fitted with the inner edge of the auxiliary diaphragm 740, and the inner edge of the vibration part 762 is arranged between the bottom end of the outer peripheral plate 753 of the support frame 750 and the auxiliary diaphragm 740, thereby, the avoidance space 843 can also avoid the vibration part 762, and the vibration part 762 can vibrate with the voice coil 710, thereby assisting the stability of the vibration system 700, which is conducive to maintaining a good sound quality.

[0122] It can be understood that in order to accommodate the auxiliary vibration membrane 740 sandwiched between the outer ring bracket 832 of the magnetic conductive frame 830 and the vertical side plate 842 of the basin frame 840 and the vibration part 762 of the flexible circuit board 760, as shown in FIG. Fig.13 As shown, the top of the vertical side plate 842 of the basin frame 840 is provided with a plurality of protrusions 8421, such as Fig.14b As shown, the bottom of the outer ring bracket 832 of the magnetic conductive frame 830 is provided with a flange wall 8321, and the flange wall 8321 is connected to the protrusion 8421. Therefore, there is a gap between the portion of the vertical side plate 842 where the protrusion 8421 is not provided and the bottom of the outer ring bracket 832, and the gap can be used to accommodate the outer edge of the auxiliary vibration membrane 740 and the outer edge of the vibration part 762 of the flexible circuit board 760.

[0123] In a specific embodiment, the protrusion 8421 provided on the vertical side plate 842 can be connected to the flange wall 8321 of the magnetic frame 830 by laser welding, thereby further improving the impact resistance.

[0124] It can be understood that in the speaker module 60 of the embodiment of the present application, it includes the core 70 in any of the above-mentioned embodiments, which is conducive to improving the impact resistance of the inner ring bottom plate 831, so that after being subjected to external impact, the inner ring bottom plate 831 can remain relatively stable, reducing the impact on the magnetic field, so that the speaker module 60 can still maintain good sound quality.

[0125] In the electronic device 1 of the embodiment of the present application, since it has the above-mentioned speaker module 60, it can also have the above-mentioned beneficial effects, which will not be described in detail here.

[0126] It should be noted that in the examples and description of this patent, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0127] Although the present application has been illustrated and described with reference to certain preferred embodiments thereof, it will be apparent to those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present application.

Claims

1. A core of a speaker module, characterized in that: include: A vibration system, comprising a voice coil, and a main diaphragm and an auxiliary diaphragm spaced apart in a vibration direction; The voice coil is located below the main diaphragm and is connected to the main diaphragm and the auxiliary diaphragm; A magnetic circuit system, located below the main diaphragm, comprising a magnet assembly and a magnetic conductive assembly; The magnet assembly comprises a central magnet and an annular magnet outside the central magnet, a magnetic gap is formed between the annular magnet and the central magnet, and the bottom of the voice coil extends into the magnetic gap; The magnetic conductive component includes a magnetic conductive frame, which includes an inner ring bottom plate and an outer ring bracket surrounding the outer side of the inner ring bottom plate; the inner ring bottom plate is attached to the top surface of the annular magnet, and its shape matches the top surface of the annular magnet; the outer ring bracket is connected to the inner ring bottom plate, and an avoidance hole that can avoid the auxiliary diaphragm is defined between the outer ring bracket and the inner ring bottom plate; the main diaphragm is mounted on the top of the outer ring bracket.

2. The core of the speaker module according to claim 1, characterized in that: The magnetic conductive assembly also includes a basin frame; the basin frame includes a bottom magnetic conductive plate and a vertical side plate connected to the bottom magnetic conductive plate, the magnet assembly is installed at the center of the bottom magnetic conductive plate, and the bottom surfaces of the central magnet and the annular magnet are in contact with the bottom magnetic conductive plate; The magnetic conductive frame is mounted on the vertical side plate of the basin frame, so that the bottom surface of the inner ring bottom plate of the magnetic conductive frame is in contact with the top surface of the annular magnet.

3. The core of the speaker module according to claim 2, characterized in that: A plurality of protrusions are arranged on the top of the vertical side plate of the basin frame, and a flange wall is arranged on the bottom of the outer ring bracket of the magnetic conductive frame, and the flange wall is connected to the protrusions.

4. The core of the speaker module according to claim 2, characterized in that: The vibration system further includes a dome and a supporting frame, wherein the main diaphragm is connected to the auxiliary diaphragm via the dome and the supporting frame; the supporting frame is located between the dome and the auxiliary diaphragm; The outer edge of the auxiliary vibration membrane is located between the outer ring bracket of the magnetic frame and the vertical side plate of the basin frame, the inner edge of the auxiliary vibration membrane is connected to the bottom end of the supporting frame, and there is a gap between the inner edge of the auxiliary vibration membrane and the annular magnet; so that an avoidance space is formed between the avoidance hole of the magnetic frame, the vertical side plate of the basin frame and the annular magnet, so that the auxiliary vibration membrane can be avoided.

5. The core of the speaker module according to claim 4, characterized in that: The support frame is an annular structure, comprising an inner peripheral plate, an outer peripheral plate, and a top plate connecting the inner peripheral plate and the outer peripheral plate, wherein the top plate is located at one end of the inner peripheral plate and the outer peripheral plate close to the dome, and connected to the dome; the bottom end of the inner peripheral plate is connected to the voice coil; The outer peripheral plate is located between the inner ring bottom plate and the outer ring bracket of the magnetic conductive frame, and has a gap between it and the annular magnet. The bottom end of the outer peripheral plate is connected to the inner edge of the auxiliary vibration membrane, so that there is a gap between the inner edge of the auxiliary vibration membrane and the annular magnet.

6. The core of the speaker module according to claim 5, characterized in that: The vibration system further comprises a flexible circuit board, wherein the flexible circuit board is located between the main diaphragm and the auxiliary diaphragm; The flexible circuit board includes a fixed part and a vibration part; the fixed part is used to be electrically connected to the voice coil; the outer edge of the vibration part is tightly fitted with the outer edge of the auxiliary vibration membrane, and the inner edge of the vibration part is tightly fitted with the inner edge of the auxiliary vibration membrane.

7. The core of the speaker module according to claim 6, characterized in that: The outer edge of the vibration part of the flexible circuit board and the outer edge of the auxiliary vibration film are stacked and arranged between the outer ring bracket of the magnetic conductive frame and the vertical side plate of the basin frame; The inner edge of the vibration part of the flexible circuit board is arranged between the bottom end of the outer peripheral plate of the support frame and the inner edge of the auxiliary vibration membrane, so that the avoidance space can avoid the auxiliary vibration membrane and the vibration part of the flexible circuit board.

8. The core of the speaker module according to claim 2, characterized in that: A through hole is arranged between the bottom magnetic conductive plate of the basin frame and the vertical side plate; the position of the through hole corresponds to the position of the avoidance hole of the magnetic conductive frame; a damping net is also arranged at the bottom of the basin frame, and the damping net covers the through hole.

9. The core of the speaker module according to claim 1, characterized in that: The annular magnet includes side magnets located on both sides of the central magnet and a connecting magnet connecting the two side magnets, and the side magnets and the connecting magnets together form an annular structure.

10. The core of the speaker module according to claim 1, characterized in that: The inner ring bottom plate of the magnetic conductive frame comprises: two first connecting parts connected to the bottom of the outer ring bracket and arranged opposite to each other; and two second connecting parts respectively connected to the two first connecting parts to form an inner ring; The two second connecting parts respectively define two avoiding holes with the two first connecting parts and the frames of the adjacent outer ring brackets; The number of the auxiliary diaphragms is two, and the positions of the two auxiliary diaphragms correspond to the two avoidance holes respectively.

11. The core of the speaker module according to claim 10, characterized in that: The magnetic conductive frame is integrally formed, or the magnetic conductive frame is a split structure.

12. The core of the speaker module according to claim 11, characterized in that: The two first connecting parts of the magnetic conductive frame are integrally formed with the outer ring bracket; the two second connecting parts are separate short-side magnetic conductive rings; Two ends of the short-side magnetic conductive ring are respectively connected to the two first connecting parts, and the two short-side magnetic conductive rings and the two first connecting parts constitute the inner ring; The first connecting portion is provided with a first cutout, and the short-side magnetic conductive ring is provided with a second cutout. The first cutout and the second cutout are consistent in shape and are correspondingly connected.

13. The core of the speaker module according to claim 1, characterized in that: The magnetic conductive component also includes a central magnetic conductive plate, which is attached to the top surface of the central magnet and has a shape that matches the top surface of the central magnet.

14. A speaker module, characterized in that: include: A shell and a core of a speaker module as claimed in any one of claims 1 to 13; The shell comprises a front cover, the front cover is fixed on a side of the main diaphragm away from the magnetic circuit system, and the front cover is provided with a sound outlet channel.

15. An electronic device, characterized in that: include: A housing and a speaker module as claimed in claim 14; The shell is provided with a sound outlet hole; the speaker module is arranged in the shell, and the sound outlet hole is communicated with the sound outlet channel.

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